• is a reaction to one or more traumatic events arising out of and in the course of employment, or;

• is caused by a significant work-related stressor, including bullying or harassment, or a cumulative series of significant work-related stressors.

The worker’s mental disorder must be diagnosed by a psychologist or psychiatrist (previously a physician’s diagnosis was sufficient) and be one of the conditions described in the most recent American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders.

Claims cannot be accepted if the criteria above are not met, or if the worker’s mental disorder is caused by the employer relating to the worker’s employment, such as changing the work to be performed or the working conditions, or discipline or termination.